Scaffold assembly



M r h'3, 1959 J. MCCORMICK 2,876,048

SCAFFOLD ASSEMBLY Fild July 20. 1954 FIG. I

INVENT OR JOHN McCORMICK ATTORNEY I United States SCAF FOLD ASSEMBLY John McCormick, Hillside, N. J., assignor of one-half to John Murnighan, Hillside, N. J.

Application July 20, 1954, Serial No. 444,417 1 Claim. (Cl. 304-40) This invention relates to improvements in scaffold devices, and is more particularly concerned with a scafiold assembly for use by home owners, owners of small industrial buildings and those who work on the exterior of small buildings.

Many types of scaifold devices have been devised previously which require the use of large parts diflicult for one man to handle. Also, various scaffold devices have been suggested for use by homeowners and the like, which are easily assembled by one man and stored for future use.

It is an object of this invention to provide a simple scaffold device which is easily assembled by one man. It is a further object of this invention to provide a do it yourself type of kit which the average homeowner can easily assemble into a scafiold for erection adjacent his home.

Other objects and advantages of this invention will become apparent to those skilled in the art from an examination of the following description and the accompanying drawings, forming a part thereof, and in which:

Figure 1 is a fragmentary view of a portion of a scaffold assembly,

Figure 2 is a top view of the particular clamp of the scaffold assembly according to the invention,

Figure 3 is a partly elevational and partly sectional view along lines 33 of Figure 2, and

Figure 4 is a partly elevational and partly sectional view along lines 4-4 of Figure 2. The do it yourself type of scaffold assembly of the invention comprises cast or stamped parts which can be bolted or otherwise assembled to 2 by 4 inch or 4 by 4 inch lumber, which is usually readily available in most localities.

Referring to Figure 6 are juxtapositioned 1, a pair of front columns and in front of the rear columns and are attached thereto by a side support assembly composed of members D and D, and a connecting side piece 7. The side piece 7 is preferably a piece of 2 by 4 inch lumber of any desired length, which positions the front column from the rear column. The end of the side piece 7 is affixed to the front column 5 by means of a two part C-clamp member D and D according to Figures 2, 3 and 4. The front columns, which are preferably of a 4 by 4 inch lumber are clamped by the parts D and D according to Figure 2, which provides a through channel 10, protuberances 11, and bolts 12, 12 for this purpose. The member D also includes a partially enclosed channel 13 for the reception of, and clamping of the side piece 7. A clamp screw 14 serves the purpose of clamping the side piece 7. If two sets of front and rear columns are used, then four side support assemblies are required.

In particular, the clamp comprises first and second C-shaped clamp members D and D, gripping protuberances 11 on the inner surfaces A and B of members D and D respectively, bolts 12 connecting the C-shaped members to form the channel 10 therebetween, a rectangular frame D having parallel side walls 15 and 16 extending rearwardly of wall 17 of clamp member D and an end wall 18 connecting the walls 15 and 16 forming the rectangular frame D The wall 18 extends upwardly of walls 15 and 16 forming a U-shaped seat for side piece 7.

In the event lengths of lumber are not available for the front columns in the size required then the proper length can be improvised by using splicer members F according to Figure 1.

To provide a cross bracing support for the front columns 5 and 6 a cross bracing support assembly is used. This assembly consists of two cross members 17 and 18 which are centrally swivelly affixed at 19, and which preferably are of 2 by 4 inch lumber. The cross members are attached at their ends to the front columns by a member E according to Figure l.

The clamp members of the assembly can be stamped out of metal, e. g., aluminum, or can be cast out of metal. Various modifications can be made in the parts shown and described herein which come Within the scope of the invention and it is intended that the invention be restricted only by the scope of the appended claim.

What I claim is:

In a scaffold assembly, a clamp means for holding cross members, the clamp means comprising first and second C-shaped clamp members, gripping means on inner surfaces of said clamp members, means for connecting said clamps to form a channel therebetween, an integral extension on one of said clamps and extending rearwardly therefrom, said extension comprising a rectangular frame having side walls extending rearwardly from said clamp and an end wall connecting said side walls, a U-shaped seat in said side walls and clamp screw operative through said rear wall.

References Cited in the file of this patent UNITED STATES PATENTS 353,281 Anderson Nov. 30, 1886 534,274 Massau Feb. 19, 1895 805,422 Hogan Nov. 21, 1905 1,007,759 Whitney Nov. 7, 1911 1,260,531 Fiala Mar. 26, 1918 1,636,930 Vila July 26, 1927 1,714,298 Davison May 21, 1929 1,848,085 Eisenschmidt Mar. 1, 1932 1,987,826 Heumann Jan. 15, 1935 2,187,642 Brown Jan. 16, 1940 2,365,501 Walstom Dec. 19, 1944 2,413,569 Isakson Dec. 31, 1946 FOREIGN PATENTS 20,652 Great Britain Nov. 15, 1900 33,175 France Aug. 18, 1928 

